NL31822C - - Google Patents
Info
- Publication number
- NL31822C NL31822C NL58211A NL58211A NL31822C NL 31822 C NL31822 C NL 31822C NL 58211 A NL58211 A NL 58211A NL 58211 A NL58211 A NL 58211A NL 31822 C NL31822 C NL 31822C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/15—Cathodes heated directly by an electric current
- H01J1/16—Cathodes heated directly by an electric current characterised by the shape
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1930A0097530 DE618984C (de) | 1930-08-26 | 1930-08-26 | Gluehkathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL31822C true NL31822C (fi) | 1934-01-15 |
Family
ID=34812899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL58211A NL31822C (fi) | 1930-08-26 | 1931-08-24 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US1951216A (fi) |
| BE (1) | BE382201A (fi) |
| DE (1) | DE618984C (fi) |
| FR (1) | FR719108A (fi) |
| GB (1) | GB374699A (fi) |
| NL (1) | NL31822C (fi) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR830663A (fr) * | 1936-12-31 | 1938-08-05 | Rca Corp | Perfectionnements aux systèmes d'électrodes pour dispositifs à décharge électronique |
| DE744452C (de) * | 1940-03-29 | 1944-01-19 | Aeg | Unmittelbar geheizte Kathode, insbesondere fuer Hochleistungsroehren |
| DE10020266A1 (de) * | 2000-04-25 | 2001-11-08 | Siemens Ag | Thermionischer Flachemitter |
-
1930
- 1930-08-26 DE DE1930A0097530 patent/DE618984C/de not_active Expired
-
1931
- 1931-06-25 FR FR719108D patent/FR719108A/fr not_active Expired
- 1931-08-12 US US556709A patent/US1951216A/en not_active Expired - Lifetime
- 1931-08-24 GB GB23790/31A patent/GB374699A/en not_active Expired
- 1931-08-24 BE BE382201D patent/BE382201A/xx unknown
- 1931-08-24 NL NL58211A patent/NL31822C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| DE618984C (de) | 1935-09-19 |
| BE382201A (fi) | 1931-09-30 |
| GB374699A (en) | 1932-06-16 |
| FR719108A (fr) | 1932-02-02 |
| US1951216A (en) | 1934-03-13 |